package cn.tedu._04weibo.base.filters;

import cn.tedu._04weibo.pojo.vo.UserVO;
import jakarta.servlet.*;
import jakarta.servlet.annotation.WebFilter;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import jakarta.servlet.http.HttpSession;
import lombok.extern.slf4j.Slf4j;

import java.io.IOException;

@Slf4j
@WebFilter(filterName = "loginCheckFilter", urlPatterns = {"/v1/weibo/insert", "/v1/comment/insert"})
public class LoginCheckFilter implements Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
        Filter.super.init(filterConfig);
    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        log.debug("进入登录状态校验的过滤器...");
        HttpServletRequest request = (HttpServletRequest) servletRequest;
        HttpServletResponse response = (HttpServletResponse) servletResponse;
        HttpSession session = request.getSession();
        UserVO userVO = (UserVO) session.getAttribute("user");
        log.debug("从Session中获取的UserVO对象:{}", userVO);
        if (userVO != null){
            //放行
            filterChain.doFilter(request, response);
        } else {
            log.debug("用户未登录,拦截...");
            response.sendRedirect("/login.html");
        }
    }

    @Override
    public void destroy() {
        Filter.super.destroy();
    }
}
